#include "sum_integers.hpp"
#include <numeric> // For std::accumulate

long long sum_integers(std::initializer_list<int> integers) 
{
    long long sum = 0;
    for (int i : integers) {
        sum += i;
    }
    return sum;
    // Alternatively, using std::accumulate:
    // return std::accumulate(integers.begin(), integers.end(), 0LL);
}